Optimising the antibiotic treatment of uncomplicated acute appendicitis: a protocol for a multicentre randomised clinical trial (APPAC II trial) Bằng J. Haijanen, S. Sippola, J. Grönroos, T. Rautio, P. Nordström, T. Rantanen, M. Aarnio, I. Ilves, S. Hurme, H. Marttila, J. Virtanen, A. Mattila, H. Paajanen, P. Salminen, on behalf of the APPAC study group

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